Answer:
Your using the word dreadful do describe a perfect world. You are also using perfect.
Step-by-step explanation:
Dreadfully means two things, one is very badly. Like the performers played the instruments dreadfully. The other is Extremely. Which would make sense in you case. And for the reason that perfect stands out is because there is no such thing as a perfect world. We are always going to make mistakes no matter what.